Friday, June 24, 2011

Health Alert - Top National "Nutrition Experts" Get It Wrong

By Miami Beach Chiropractor & Sports Physician, Dr. Todd Narson

This is such an important topic that I'm gonna make a couple comments, then paste the entire article in from the source. Recently, US News and World Report published an article reporting on the top 20 diets. Unfortunately for their magazine and its readers, they got "it" DEAD WRONG!.

Why dead wrong? Because their so called "top nutrition experts" apparently don't consider actual research when making their determinations for what is healthful and what isn't. The big problem is that many doctors who, like I are out in the trenches, seeing and advising patients in real life; are advising them on bogus information. Then, they advise you with their bogus information (think about the original USDA food pyramid) and you end up with the exact conditions and diseases you're trying to prevent. Dead Wrong.

So below is the unedited RAW response from one Loren Cordain PhD's colleagues at Colorado State University alerting him to the US News and World Report article, followed by links to the article and then.....(wait for it)..... Dr. Cordain's incredible response to their inane article.

You'll notice Dr. Cordain responds WITH very credible nutrition research that's been vetted and published in scientific journals. He backs up EVERYTHING he says and is right on the money.

After reading this as well as the original article, I call into question the very credibility of anything reported in US News and World report. But then again, I'm just one of those people that like to "question" everything.

The following is the response/rebuttal directly from Dr. Cordain's web site: www.ThePaleoDiet.com

Please read, comment, enjoy and learn....

Dr. Cordain’s Rebuttal to U.S. News and World Report Top 20 Diets
Hi Doc,

I’m not sure if you’ve seen this or not, but US News ranked Paleo last of 20 diets claiming a lack of scientific evidence and no-long term weight maintenance guidelines. I’m not sure if you’d be interested in defending it or not, but if you’d be willing to provide specific refutations of their claims, I’d like to write a response piece for the Colorado State University Collegian to run next Wednesday, my deadline is Saturday.

Good to hear from you and many thanks for your continued support of the Paleo Diet. I hadn’t seen this piece, but I appreciate that you have brought it to my attention. It is obvious that whoever wrote this piece did not do their homework and has not read the peer review scientific papers which have examined contemporary diets based upon the Paleolithic food groups which shaped the genomes of our ancestors. Accordingly the writer’s conclusions are erroneous and misleading. I feel strongly that it is necessary to point out these errors and make this information known to a much wider audience than those reached by the readers of the U.S. News and World Report. You have my permission to syndicate my response and or your write up for the CSU Collegian to any of the major news services including AP and UPI. Additionally, I will copy a number of colleagues and scientists worldwide with this message to ensure that it will be widely circulated on the web, blogs and chat groups.

The writer of this article suggests that the Paleo Diet has only been scientifically tested in “one tiny study”. This quote is incorrect as five studies (1-7); four since 2007, have experimentally tested contemporary versions of ancestral human diets and have found them to be superior to Mediterranean diets, diabetic diets and typical western diets in regards to weight loss, cardiovascular disease risk factors and risk factors for type 2 diabetes.

The first study to experimentally test diets devoid of grains, dairy and processed foods was performed by Dr. Kerin O’Dea at the University of Melbourne and published in the Journal, Diabetes in 1984 (6). In this study Dr. O’Dea gathered together 10 middle aged Australian Aborigines who had been born in the “Outback”. They had lived their early days primarily as hunter gatherers until they had no choice but to finally settle into a rural community with access to western goods. Predictably, all ten subjects eventually became overweight and developed type 2 diabetes as they adopted western sedentary lifestyles in the community of Mowwanjum in the northern Kimberley region of Western Australia. However, inherent in their upbringing was the knowledge to live and survive in this seemingly desolate land without any of the trappings of the modern world.

Dr. O’Dea requested these 10 middle aged subjects to revert to their former lives as hunter gatherers for a seven week period. All agreed and traveled back into the isolated land from which they originated. Their daily sustenance came only from native foods that could be foraged, hunted or gathered. Instead of white bread, corn, sugar, powdered milk and canned foods, they began to eat the traditional fresh foods of their ancestral past: kangaroos, birds, crocodiles, turtles, shellfish, yams, figs, yabbies (freshwater crayfish), freshwater bream and bush honey. At the experiment’s conclusion, the results were spectacular, but not altogether unexpected given what known about Paleo diets, even then. The average weight loss in the group was 16.5 lbs; blood cholesterol dropped by 12 % and triglycerides were reduced by a whopping 72 %. Insulin and glucose metabolism became normal, and their diabetes effectively disappeared.

The first recent study to experimentally test contemporary Paleo diets was published in 2007 (5). Dr. Lindeberg and associates placed 29 patients with type 2 diabetes and heart disease on either a Paleo diet or a Mediterranean diet based upon whole grains, low-fat dairy products, vegetables, fruits, fish, oils, and margarines. Note that the Paleo diet excludes grains, dairy products and margarines while encouraging greater consumption of meat and fish. After 12 weeks on either diet blood glucose tolerance (a risk factor for heart disease) improved in both groups, but was better in the Paleo dieters. In a 2010 follow-up publication, of this same experiment the Paleo diet was shown to be more satiating on a calorie by calorie basis than the Mediterranean diet because it caused greater changes in leptin, a hormone which regulates appetite and body weight.

In the second modern study (2008) of Paleo Diets, Dr. Osterdahl and co-workers (7) put 14 healthy subjects on a Paleo diet. After only three weeks the subjects lost weight, reduced their waist size and experienced significant reductions in blood pressure, and plasminogen activator inhibitor (a substance in blood which promotes clotting and accelerates artery clogging). Because no control group was employed in this study, some scientists would argue that the beneficial changes might not necessarily be due to the Paleo diet. However, a better controlled more recent experiments showed similar results.

In 2009, Dr. Frasetto and co-workers (1) put nine inactive subjects on a Paleo diet for just 10 days. In this experiment, the Paleo diet was exactly matched in calories with the subjects’ usual diet. Anytime people eat diets that are calorically reduced, no matter what foods are involved, they exhibit beneficial health effects. So the beauty of this experiment was that any therapeutic changes in the subjects’ health could not be credited to reductions in calories, but rather to changes in the types of food eaten. While on the Paleo diet either eight or all nine participants experienced improvements in blood pressure, arterial function, insulin, total cholesterol, LDL cholesterol and triglycerides. What is striking about this experiment is how rapidly so many markers of health improved, and that they occurred in every single patient.

In an even more convincing recent (2009) experiment, Dr. Lindeberg and colleagues (2) compared the effects of a Paleo diet to a diabetes diet generally recommended for patients with type 2 diabetes. The diabetes diet was intended to reduce total fat by increasing whole grain bread and cereals, low fat dairy products, fruits and vegetables while restricting animal foods. In contrast, the Paleo diet was lower in cereals, dairy products, potatoes, beans, and bakery foods but higher in fruits, vegetables, meat, and eggs compared to the diabetes diet. The strength of this experiment was its cross over design in which all 13 diabetes patients first ate one diet for three months and then crossed over and ate the other diet for three months. Compared to the diabetes diet, the Paleo diet resulted in improved weight loss, waist size, blood pressure, HDL cholesterol, triglycerides, blood glucose and hemoglobin A1c (a marker for long term blood glucose control). This experiment represents the most powerful example to date of the Paleo diet’s effectiveness in treating people with serious health problems.

So, now that I have summarized the experimental evidence supporting the health and weight loss benefits of Paleo Diets, I would like to directly respond to the errors in the U.S. News and World Report article.

1. “Will you lose weight? No way to tell.”

Obviously, the author of this article did not read either the study by O’Dea (6) or the more powerful three month crossover experiment by Jonsson and colleagues (9) which demonstrated the superior weight loss potential of high protein, low glycemic load Paleo diets. Similar results of high protein, low glycemic load diets have recently been reported in the largest randomized controlled trials ever undertaken in both adults and children.

A 2010 randomized trial involving 773 subjects and published in the New England Journal of Medicine (8) confirmed that high protein, low glycemic index diets were the most effective strategy to keep weight off. The same beneficial effects of high protein, low glycemic index diets were dramatically demonstrated in largest nutritional trial, The DiOGenes Study (9), ever conducted in a sample of 827 children. Children assigned to low protein, high glycemic diets became significantly fatter over the 6 month experiment, whereas those overweight and obese children assigned to the high protein, low glycemic nutritional plan lost significant weight.

2. “Does it have cardiovascular benefits? Unknown.”

This comment shows just how uninformed this writer really is. Clearly, this person hasn’t read the following papers (1 – 6) which unequivocally show the therapeutic effects of Paleo Diets upon cardiovascular risk factors.

“And all that fat would worry most experts.”

This statement represents a “scare tactic” unsubstantiated by the data. As I, and almost the entire nutritional community, have previously pointed out, it is not the quantity of fat which increases the risk for cardiovascular disease or cancer, or any other health problem, but rather the quality. Contemporary Paleo Diets contain high concentrations of healthful omega 3 fatty acids, monounsaturated fatty acids and long chain polyunsaturated fatty acids that actually reduce the risk for chronic disease (10-18).

3. “Can it prevent or control diabetes? Unknown.”

Here is another example of irresponsible and biased journalism which doesn’t let the facts speak for themselves. Obviously, the author did not read the study by O’dea (6) or Jonsson et al. (2) which showed dramatic improvements in type 2 diabetics consuming Paleo diets.

“but most diabetes experts recommend a diet that includes whole grains and dairy products.”

If the truth be known, in a randomized controlled trial, 24 8-y-old boys were asked to take 53 g of protein as milk or meat daily (19). After only 7 days on the high milk diet, the boys became insulin resistant. This is a condition that precedes the development of type 2 diabetes. In contrast, In the meat-group, there was no increase in insulin and insulin resistance. Further, in the Jonsson et al. study (2) milk and grain free diets were shown to have superior results in improving disease symptoms in type 2 diabetics.

4. “Are there health risks? Possibly. By shunning dairy and grains, you’re at risk of missing out on a lot of nutrients.”

Once again, this statement shows the writer’s ignorance and blatant disregard for the facts. Because contemporary ancestral diets exclude processed foods, dairy and grains, they are actually more nutrient (vitamins, minerals and phytochemicals) dense than government recommended diets such as the food pyramid. I have pointed out these facts in a paper I published in the American Journal of Nutrition in 2005 (13) along with another paper in which I analyzed the nutrient content of modern day Paleo diets (12 ). Most nutritionists are aware that processed foods made with refined grains, sugars and vegetable oils have low concentrations of vitamins and minerals, but few realized that dairy products and whole grains contain significantly lower concentrations of the 13 vitamins and minerals most lacking in the U.S. diet compared to lean meats, fish and fresh fruit and vegetables (12, 13).

“Also, if you’re not careful about making lean meat choices, you’ll quickly ratchet up your risk for heart problems” .

Actually, the most recent comprehensive meta analyses do not show fresh meat consumption whether fat or lean to be a significant risk factor for cardiovascular disease (20-25), only processed meats such as salami, bologna, bacon and sausages (20).

About Me

Dr. Todd
M. Narson graduated from Logan College of Chiropractic in 1990 and is a Diplomate
of the American Chiropractic Board of Sports Physicians (DACBSP). One
of only 240 DACBSPs in the country; 1 of 10 in Florida and the only one
practicing in Miami-Dade County, FL. . In 2011 Dr Narson was granted
anInternational Chiropractic Sports
Science Diploma (ICSSD)by
the International Federation of Sports Chiropractic (F.I.C.S.) and is the only
chiropractor in South Florida with such international credential.Dr.
Narson was a member of the COPAG international sports medicine team at the XVI
Pan American Games in Guadalajara, Mexico, October 2011.During his tenure at the Pan
American Games, he worked with teams from all over the Western hemisphere
including Chile, Cuba, Ecuador, Colombia, Dominican Republic, Argentina, Peru
& Mexico.

Dr.
Narson has lived in South Florida for over 30 years. He is a 2-term
past president of the Florida Chiropractic Association’s Council on Sports
Injuries, Physical Fitness & Rehabilitation and has been on their governing
board for 8+ years. He was honored as the recipient of the coveted Chiropractic
Sports Physician of the Year award in 1999-2000.

Dr.
Narson was also a credentialed treating physician in the Poly-Clinics at the20th
Central American & All Caribbean Sport Games (XX Juegos Deportivos
CentroAmricanos Y Del Caribe), Cartegena, Colombia.

Dr.
Narson in inventor and developer of the Narson Body Mechanic N6, a soft tissue
"multi-tool" used for Instrument Assisted Soft Tissue Mobilizations
techniques such as FAKTR and others. He has been an M1 & M2 certified
Graston Technique(r) provider for the past 10 years and is trained in FAKTR
advanced soft tissue mobilization & rehabilitation techniques.

Along with Allen Miller, Dr. Narson has co-authored the paper: Protocols
For Proprioceptive Active Re-Training Boards (balance boards).
Published in Chiropractic Sports Medicine Magazine; the Journal of the American
Chiropractic Board of Sports Physicians, Vol 9, No. 2, May 1995 pp 52-55.

Having
chiropractors associated with hospitals was unheard of here in Florida until
1994 when a small group of chiropractors were credentialed here in South
Florida. As some of the first chiropractors in the country to have such
privileges, Dr. Narson was part of the original group accepted into the
Chiropractic Division at Golden Glades Regional Medical Center.

Coining
the term: “Natural Sports Medicine” Dr. Narson has been
educating personal trainers at local gyms and health clubs for several years in
including well known clubs such as Club Body Tech, Crunch & David
Barton’s (Original) Gym in South Beach.

He was medical director
for the 1998 Pan American Race Walk Cup held in Downtown Miami
&

He also served as Medical
team member and treating physician for the 1999 Pan American Tae Kwon Do
Regional qualification Tournament for the Sydney 2000 Olympic Games

Meet Director/treating
physician for the Sydney 2000 Para-Olympic Qualifier/USA Open-Power
lifting held in North Miami.

In
1994 Dr. Narson was asked to join the professional boxing team of Don
King’s light weight contender: Lamar “COSHISE” Murphy and was named
“Team Physician”. Providing the fighter with performance enhancement training
techniques, nutrition and chiropractic care, Dr. Narson worked with the boxing
trainers and traveled with team COCHISE Murphy around the country during his
1995 quest for the WBC lightweight title.

Coors
Lite, Gatorade, Jose’ Cuervo and Jiffy Lube were a few
of the sponsors of large sporting events such as beach volleyball, triathlons
and professional NASCAR racing that have credentialed Dr.
Narson as an on-site treating physician. Dr. Narson has also been
included on the sports medicine teams at the Miami Grand Prix, the Florida
Sunshine State Games as well as other national and international
sports competitions.

Dr.
Narson has had the privilege of being invited to treat the cast and crews of
the Broadway Shows: Les Miserables, The Rockettes, & Damn Yankees. To
date, Dr. Narson has spent over 1000 hours working “on field” with athletes at
various sporting events from local regional athletes, to world class Olympians
& professionals.

Sports
medicine is on the cutting edge of healthcare, Dr. Narson uses his experience
and education with athletes and sports injuries to treat all patients, not just
athletes. Dr. Narson feels everyone deserves the knowledge of a
sports medicine physician, because everyone, in their own way is an athlete as
some level.

Dr.
Narson practices in Miami Beach with his partner and wife, Dr. Corey
Narson. Drs. Narson has lived in Miami Beach since 1993 where they
also raise their children.

Dr. Narson is an active triathlete and member of the South Florida Triathletes Hammerheads triathlon club. He is holds a 1st dan blackbelt in shotokan karate.